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Title: Yolk-shell structured Sb@C anodes for high energy Na-ion batteries

Abstract

Despite great advances in sodium-ion battery developments, the search for high energy and stable anode materials remains a challenge. Alloy or conversion-typed anode materials are attractive candidates of high specific capacity and low voltage potential, yet their applications are hampered by the large volume expansion and hence poor electrochemical reversibility and fast capacity fade. Here, we use antimony (Sb) as an example to demonstrate the use of yolk-shell structured anodes for high energy Na-ion batteries. The Sb@C yolk-shell structure prepared by controlled reduction and selective removal of Sb2O3 from carbon coated Sb2O3 nanoparticles can accommodate the Sb swelling upon sodiation and improve the structural/electrical integrity against pulverization. It delivers a high specific capacity of ~554 mAh•g-1, good rate capability (315 mhA•g-1 at 10C rate) and long cyclability (92% capacity retention over 200 cycles). Full-cells of O3-Na0.9[Cu0.22Fe0.30Mn0.48]O2 cathodes and Sb@C-hard carbon composite anodes demonstrate a high specific energy of ~130 Wh•kg-1 (based on the total mass of cathode and anode) in the voltage range of 2.0-4.0 V, ~1.5 times energy of full-cells with similar design using hard carbon anodes.

Authors:
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Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1406755
Report Number(s):
PNNL-SA-127468
Journal ID: ISSN 2211-2855; TE1400000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nano Energy; Journal Volume: 40; Journal Issue: C
Country of Publication:
United States
Language:
English

Citation Formats

Song, Junhua, Yan, Pengfei, Luo, Langli, Qi, Xingguo, Rong, Xiaohui, Zheng, Jianming, Xiao, Biwei, Feng, Shuo, Wang, Chongmin, Hu, Yong-Sheng, Lin, Yuehe, Sprenkle, Vincent L., and Li, Xiaolin. Yolk-shell structured Sb@C anodes for high energy Na-ion batteries. United States: N. p., 2017. Web. doi:10.1016/j.nanoen.2017.08.051.
Song, Junhua, Yan, Pengfei, Luo, Langli, Qi, Xingguo, Rong, Xiaohui, Zheng, Jianming, Xiao, Biwei, Feng, Shuo, Wang, Chongmin, Hu, Yong-Sheng, Lin, Yuehe, Sprenkle, Vincent L., & Li, Xiaolin. Yolk-shell structured Sb@C anodes for high energy Na-ion batteries. United States. doi:10.1016/j.nanoen.2017.08.051.
Song, Junhua, Yan, Pengfei, Luo, Langli, Qi, Xingguo, Rong, Xiaohui, Zheng, Jianming, Xiao, Biwei, Feng, Shuo, Wang, Chongmin, Hu, Yong-Sheng, Lin, Yuehe, Sprenkle, Vincent L., and Li, Xiaolin. Sun . "Yolk-shell structured Sb@C anodes for high energy Na-ion batteries". United States. doi:10.1016/j.nanoen.2017.08.051.
@article{osti_1406755,
title = {Yolk-shell structured Sb@C anodes for high energy Na-ion batteries},
author = {Song, Junhua and Yan, Pengfei and Luo, Langli and Qi, Xingguo and Rong, Xiaohui and Zheng, Jianming and Xiao, Biwei and Feng, Shuo and Wang, Chongmin and Hu, Yong-Sheng and Lin, Yuehe and Sprenkle, Vincent L. and Li, Xiaolin},
abstractNote = {Despite great advances in sodium-ion battery developments, the search for high energy and stable anode materials remains a challenge. Alloy or conversion-typed anode materials are attractive candidates of high specific capacity and low voltage potential, yet their applications are hampered by the large volume expansion and hence poor electrochemical reversibility and fast capacity fade. Here, we use antimony (Sb) as an example to demonstrate the use of yolk-shell structured anodes for high energy Na-ion batteries. The Sb@C yolk-shell structure prepared by controlled reduction and selective removal of Sb2O3 from carbon coated Sb2O3 nanoparticles can accommodate the Sb swelling upon sodiation and improve the structural/electrical integrity against pulverization. It delivers a high specific capacity of ~554 mAh•g-1, good rate capability (315 mhA•g-1 at 10C rate) and long cyclability (92% capacity retention over 200 cycles). Full-cells of O3-Na0.9[Cu0.22Fe0.30Mn0.48]O2 cathodes and Sb@C-hard carbon composite anodes demonstrate a high specific energy of ~130 Wh•kg-1 (based on the total mass of cathode and anode) in the voltage range of 2.0-4.0 V, ~1.5 times energy of full-cells with similar design using hard carbon anodes.},
doi = {10.1016/j.nanoen.2017.08.051},
journal = {Nano Energy},
number = C,
volume = 40,
place = {United States},
year = {Sun Oct 01 00:00:00 EDT 2017},
month = {Sun Oct 01 00:00:00 EDT 2017}
}